As we know, currently the BiS Libram for a Holy Paladin is Libram of Renewal or if you are FoL spammer it's one of the arena ones, that are harder to get for non=pvp'ers.

But here on WoW-Heroes Librams are treated solely based on ilvl, making often BiS Librams lower our Gear Score.

In my opinion the best way, with not only Librams would be to treat their effect's as enchants and just give additional score for them, so the BiS Libram would be really BiS compared to higher ilvl Librams.